Koenig.] 



220 



[Aug. 21 



sequently the emptying of the burette requires a considerable extent of 

 time. But otherwise the apparatus is quite perfect and neat in its exe- 

 cution. 



I shall proceed now with the description of a device, which has realized 

 my expectations as to the possibility of combining the advantages of 

 Mohr's principle with universal applicability and convenience of hand- 

 ling. 



1, The burette. I take a Mohr burette tube, as it is furnished by the 



